On one ordinary day back in 2012, a hefty envelope turned up in my snail mail containing a very kind letter along with a mechanical drawing so detailed it made me want to chew my hair. The sender ...

Every Boy Scout or Girl Guide probably had the experience of building a simple solar oven: an insulated box, some aluminum foil, and plastic wrap, and voila! On warm, sunny, summer days, you can bake.

I can use my Sun Oven as a regular oven by refocusing it every 30 minutes to stay in alignment with the sun, or as a slow cooker by just leaving it alone to cook all day. Even after the sun goes away, ...

Amidst extended power outages and fuel shortages, many Cubans are turning to past solutions. In Trinidad, Yudit Vidal Faife has dusted off a solar ...